If your mouth and screen say different things, attention splits. Dedicate each slide to one precise claim or image. Speak the headline, pause to let eyes settle, and use a progressive build only when it genuinely reduces cognitive load, not because software tempts you.
Choose big labels, ruthless rounding, and clear contrast so the trend is obvious in one breath. Explain the question first, then the axis, then the message. This sequence trains listening and prevents you from narrating pixels instead of meaning under time pressure.
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